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(No Model.) 2 Sheets-Sheet 1.

A. L. BEIGE.

. ALARM FOR ELEVATORS.

No. 426,104. Patented Apr. 22, 1890 -l 1 ZQJHIIWWM W/Jzwaw. wmJw aw. A, @145 @W m: NOWRIE PETERS cm, Worn-1.17am, wmmawu, n. c.

(No Model.) 2 sheets-Sheet 2.

A. L. BEIGE.

ALARM FOR ELEVATORS.

No. 426,104. Patented Apr. 22, 1890.

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UNITED STATES PATENT OFFICE.

ALFRED L. BRIOE, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR OF ONE-HALF TO F. FREMONT REED, OF SAME PLACE.

ALARM FOR ELEVATORS.

SPECIFICATION forming part of Letters Patent No. 426,104, dated April 22, 1890.

Application filed December 23, 1889. Serial No. 33421 N 1 1 1 To all whom it may concern:

Be it known that I, ALFRED L. Baron, a citizen of the United States, residing at Minneapolis, in the county of IIennepin and State of Minnesota, have invented certain new and useful Improvements in Alarms for Elevators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

In modern buildings of any considerable height passenger or freight elevators are in practicallyconstant operation during the business hours of the day and are employed as means of entrance to and egress from the upper stories of the structure. In these large buildings the danger from fire is most to be feared, and it becomes important to warn all the occupants in case fire should be discovered, in order that they may have the opportunity to escape. The elevator, being the direct means of approach and egress, is known to all occupants of the building and is movable up and down on vertical guideways.

My invention relates to alarms for elevators, and has for its object the utilization of the elevator as a means for warning the occupants of a building in case of fire or other imminent danger. IVith this end in view I mount on the elevator-car, preferably on the roof thereof, a gong or bell of resounding capacity sufficient to cause the alarm to be heard all over the building. This gong or bell is fixedly secured to one end of an arbor mounted in the free end of a lever pivoted or hinged to the roof of the elevatoncar. Loosely mounted on the arbor adjacent to the pivoted lever is a friction wheel or pulley, and pivoted between two rings secured to the inner face of the pulley are a series of cams for tripping the clapper to the bell or gong, said clapper being in one form of my invention pivoted to an arm projecting from the arbor and in an other form being made to slide in bearings on such an arm. Normally, the pivotedlever and devices carried thereby are held out of contact with one of the guideways of the elevator-shaft by a lever passing down through a slot in the roof of the car and provided with a shoulder for engaging with the wall of the slot and with a hand-grasp or loop-shaped handle. This lever is prevented from being jarred out of its normal position by the motion of the elevator by a spring. building is on fire or other danger to life is imminent the employ in charge of the elevator grasps the handle and releases the pivoted lever from its hold on the wall of the In case the 5 5 slot in the car-roof, permitting it to fall by to gravity, which may be re-enforced by a spring, if deemed necessary, and thereby engaging the friction wheel or pulley with the guideway of the elevator-shaft. As the elevator moves up and down, said wheel is therefore 6 5 rotated on the arbor, and the cams successively engage with and trip the bell hammer or clapper and cause the alarm to be sounded. Inasmuch as the cams are pivoted between the rings on the inner face of the wheel or pulley they will actuate the clapper during both the up and down motions of the elevator-car.

In the accompanying drawings, in which like symbols of reference are placed on like 7 5 parts throughout the several views, Figure 1 is a side elevation of my invention, showing it as mounted on the roof of an elevator-car. Fig. 2 is a vertical section of the device, showing the pivoted cams, the clapper, and the cave side of the gong in side elevation. Fig. 3 is a transverse section. Figs. 4c and 5 are views of a modification hereinafter referred to.

1 is a portion of an elevator-car mounted to con reciprocate in guideways in the usual manner, one of which is shown at 2.

3 is a lever mounted in bearings 4, attached to the roof of the elevator.

5 is an arm pivoted to lever 3 and passing down through a slot 6 in the roof of the car, go

having a laterally-extending bearing-face 12, I00

loosely mounted on shaft 11.

l3 13 are cams pivoted on bolts 1e 14, and

15 16 are rings secured to the inner face of the closed end of the pulley, between which the cams are mounted. Each of these cams is broad at one end and tapers down to a wedge-shaped end or point at the other, in virtue of which construction the clapper or bell-hammer will be gradually forced outward and suddenly released to strike the gong.

17 is the bell hammer or clapper pivoted in an arm 18, attached to shaft 11, and 19 is a spring which forces the clapper to strike the bell when released by the cam.

20 is the bell or gong rigidly secured to the end of shaft 11.

21 are stop-pinswhich prevent the cams from turning too far in either direction.

In the modification represented in Figs. 4 and 5 the bell hammer or clapper 21 is mounted to reciprocate in bearings 22 of an arm 23, and has a projecting arm 24, which is struck successively by the cams 25. Said cams havearrow-shaped points and rounded heels, and are provided with pins 26, which prevent them from being tripped out of position. A spiral spring 27 surrounds the stem of the bell-hammer and impels the same forward to strike the gong when the cam has passed.

The operation of the invention is evident from the above description, but will be briefly stated as follows: Should it be desired to sound the danger-signal on account of fire or other impending danger, arm 5 is released by the employ in charge of the elevator and lever 3 falls by gravity aided by spring 10 and throws the friction-wheel into contact with the guideway2, and thereafter, when the elevator is in motion,the wheel will be revolved and the cams will rapidly and successively actuate the bell-hammer, causing it to be pulled back against the stress of its spring,

which on the recoil will force it to strike the gong asharp blow. In this manner the gong will be rapidly sounded, and its resounding clangor will penetrate to the utmost recesses of the building, warning the occupants of the impending danger. As the cams automatically reverse themselves, the gong will be sounded on both the up and down trips of the elevator.

WVithout limiting myself to the exact details shown and described, what I claim is- 1. The combination, with an elevator-car, of an arm mounted to be movable on the roof thereof, a friction wheel or pulley carried by said arm, pivoted cams 011 said pulley, and a bell hammer or clapper actuated by said cams, substantially as set forth.

2. The combination, with the elevator-car, of a lever pivoted to the top thereof, a shaft fixedly attached to the free end of said lever,

a friction wheel or pulley loosely mounted on said shaft,a series of pivoted cams carried by said pulley, a gong fixedly attached to the shaft, and a bell-hammer actuated by the cams, substantially as set forth.

3. The combination, with an elevator-car and its guideways, of an alarm and an arm depending from the alarm-support for holding said alarm out of action, substantially as set forth.

4. The combination, with an elevator-car and its guideways, of apivoted lever mounted on the roof of the elevator, a friction-wheel loosely journaled on a shaft projecting from said lever, alarm mechanism actuated by said friction-wheel when it is in contact with the guideway, and a device for holding the lever and friction-wheel away from one of the guideways when it is desired to throw the alarm out of action, substantially as set forth.

5. The combination, with an elevator-car and its guidewaysmf a pivoted lever mounted on the roof of the elevator, a friction-wheel provided with a series of pivoted cams carried by said lever, an arm passing through a slot in the roof of the elevator, and provided with a shoulder for holding said wheel out of engagement with the guideway, substantially as set forth.

6. The combination, with an elevatorcar and its guideways, of a lever pivoted to the roof of the elevator, a shaft mounted in the free end of said lever, a friction-wheel loosely mounted on the shaft, a gong fixedly attached to the free end of the shaft, cams carried by the friction-wheel, and a bell-hammer actuated by the cams when the wheel is in engagement with the guideway, substantially as and for the purpose specified.

7. The combination, with an elevator-car and its guideways, of an alarm, a friction wheel or pulley, and aseries of automaticallyreversible cams carried by the pulley for actuating the alarm, substantially as and for the purpose specified.

8. The combination, with an elevator-car, of a lever pivoted to the roof thereof, a shaft fixedly mounted in the end of said lever, a friction wheel or pulley loosely mounted on said shaft, a gong attached to the end of the IIO shaft. a clapper and means carried by the I pulley for actuating the clapper, substantially as and for the purpose specified.

9. The combination, with an elevator-car, of a lever pivoted to the roof thereof and carrying an alarm and mechanism for actuating the same when in engagement with one of the guideways, of an arm depending from the lever and passing through a slot in the roof of the car, and a spring for holding a lug on the arm in engagement with the wall of the slot, substantially as and for the purpose specified.

10. An elevator-car provided with an alarm mounted on its roof, in combination with an cams carried by the pulley, and an alarm, substantially as and for the purpose specified.

12. The combination, with an elevat0r-car, of a lever mounted in bearings attached to the roof of the car, a shaft fixedly secured in the free end of the lever, a friction-Wheel having a laterally-extended bearing-face loosely mounted on the shaft, pivoted cams carried by the said Wheel, a gong attached to the end of the shaft, and a clapper actu- 1o ated by the cams, substantially as and for the purpose specified.

In testimony whereof I affix my signature in presence of two Witnesses.

ALFRED L. BRIOE. Witnesses:

F. FREMONT REED, WM. H. BLODGETT. 

